Electropneumatic track-channeler.



PATENTED APR. 2, 1907.-

A. H. GIBSON. ELEGTROPNEUMATIG TRACK- OHANNELER.

APPLICATION IILBDSEPT. 27, 1906.

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No. 848,984. P-ATENTED APR. 2, 1907; A. H. GIBSON.

ELBGTROPNEUMATIG TRACK GHANNELER.

APPLICATION FILED SEPT. 27. 1906.

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PATEQNTBD APR. 2.1907.

' A. H. GIBSON. ELEGTROPNEUMATIG TRACK UHANNELER.

APPLICATION FILED SEPT.27.1906.

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THE NORRIS PETERS co m ammo TTNTTED STATES PATENT OEETCE.

ARTHUR H. GIBSON, OF EASTON, PENNSYLVANIA, ASSIGNOR TO INGERSOLL- RAND COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

ELEOTROPNEUIVIATIC TRACK-CHANNELER.

Specification of Letters Patent.

Patented April 2, 1907.

Application filed September 27,1906. Serial No. 336.413.

To all whom it may concern:

Be it known that I, ARTHUR H. GIBSON, a subject of the King of Great Britain, and a resident of Easton, in the county of Northampton and State of Pennsylvania, have invented a new and useful Improvement in Electropneumatic Track-Ohannelers, of which the following is a specification.

This present invention relates to that class of machinery in which an air-pressor is utiliZed for reciprocating columns of air to operate a percussive tool, and has for its object to provide means independent of the pressor for raising the airpressure in the system, so that the efl'ectiveness of the pressor is increased, and thereby causes the percussive tool to strike a harder blow than where atmospheric pressure only is utilized in the system.

A practical embodiment of the invention is represented in the accompanying drawings, in which Figure 1 represents an electropneumatic track-channeler, partially in end elevation and partially in section, embodying my invention. Fig. 2 is a top plan view of the same, certain of the parts being broken away to more clearly show the construction and arrangement of the several parts. Fig. 3 is a rear view of the channeler. Figs. 4, 5, and 6 are detail sections of the inlet and discharge valves for the pump and their adjacent parts. Fig. 7 is an enlarged view showing the cylinder of the air-pump and its piston in section, and Fig. 8 is a detail sectional view of the check-valve.

I have shown my invention in connection with an electropneumatic track-channeler. The wheeled truck is denoted by 1, its two axles by2 3, and their pairs of traction-wheels by 4. The track is denoted by 5. The drive-shaft of the truck is denoted by 6, and it has a worm-gear connection 7 with the truck-axle 2 and a worm-gear connection 8 with the truck-axle 3. An electric motor 9 is shown mounted on the truck, the shaft 10 of which has a pinion 11, which meshes with a spur-gear 12 of a friction-clutch carried by the drive-shaft 6. The percussive-tool cylinder-via, the channeler-cylinder-is denoted by 13, and it is mounted on a shell 14, which is longitudinally and pivotally adjustable on the swinging back frame 15, hinged to the truck 1, as usual. The pressor is mounted on the truck, and its cylinder is denoted by. 16, and piston by 17. Flexible tubes 18 19 connect the pressor and the percussive tool, whereby the pressor operates the percussive tool'by reciprocating columns of air. An electric motor 20 is mounted on the truck in position to drive the pressor.

Means independent of the pressor are provided for raising the pressure of air therein as follows: An air-pump 21 is mounted on the truck adjacent to the drive-shaft 6. The pump-piston is denoted by 22, and it is reciprocated from the driveshaft 6 through an eccentric connection 23. It will thus be seen that the motor 9, which drives the truck, is also utilized for driving the pump. This pump is provided with a valve-chest 24, having an inlet 25 from atmosphere, which leads to a port 26, closed by an inlet-valve 27. A port 28 leads from the top of the inlet-valve into the pump-cylinder. A port 29 leads from the pump-cylinder to the bottom of the discharge-valve 30, and a dischargewalve port 31 leads from the top of the valve to a pipe 32, which leads to a port 33, which opens into the interior of the pressor-cylinder 16 at a point where the said port 33 is alternately opened to the opposite sides of the pressor-piston 17 as the pressor-piston is reciprocated. A check-valve 34 may be located in the pipe 32 at a predetermined distance from the pressor-cylinder 16 to produce the desired results.

It has been found that the system works to better effect where the pressure of air in the system is kept above atmospheric pressure. This raising of the pressure is accomplished by the air-pump herein described.

It is to be understood that the motor 9 may be rotated in both directions for driving the truck in either direction, the connection between the drive-shaft 6 and the pump 21 being such that it is immaterial in which direction the drive-shaft rotates as far as the operation of the pump is concerned.

It will be seen thatif there is too much pressure on the side of the pressor-piston which operates the upstroke of the tool the check-valve may be moved close to the pressor-cylinder, and if the reverse be true the check-valve may be moved a greater distance away from the pressor-cylinder.

It is evident that various changes might be resorted to in the construction, form, and arforth; but

What I claim is 1. In combination, a percussive tool, an air-pressor for operating it by reciprocating columns of air and means independent of the pressor for raising the pressure therein.

2. In combination, a percussive tool, an air-pressor for operating it by reciprocating columns of air and an air-pump independent of the pressor for raising the pressure therein.

3. In combination, a percussive tool, an air-pressor for operating it by reciprocating columns of air, a motor for driving the pressor and means independent of the pressor for raising the pressure therein.

4. In combination, a percussive tool, an air-pressor for operating it by reciprocating columns of air, a motor for driving the pressor and an air-pump independent of the pressor for raising the pressure therein.

5. In combination, a percussive tool, an air-pressor for operating it by reciprocating columns of air, an air-pump independent of the pressor for raising the pressure therein and a motor for driving the pump.

6. In combination, a percussive tool, an air-pressor for operating it by reciprocating columns of air, a motor for driving the pressor, an air-pump independent of the pressor for raising the pressure therein and a separate motor for driving the pump.

7. In combination, a percussive tool, an air-pressor for operating it by reciprocating columns of air, an air-pump independent of the pressor having a pipe leading to the pressor for raising the pressure therein and a check-valve located in said pipe at the desired distance from the pressor.

8. In combination, a percussive tool, an air-pressor for operating it by reciprocating columns of air, an air-pump independent of the pressor having a pipe leading to the pressor for raising the pressure therein, a check-valve located in said pipe at the desired distance from the pressor and a motor f or driving the pump.

9. In combination, a percussive tool, an air-pressor for operating it by reciprocating columns of air, a motor for driving the 10. In combination, a percussive tool, an

air-pressor for operating it by reciprocating columns of air, a motor for driving the pressor, an air-pump independent of the pressor having a pipe leading to the pressor for raising the pressure therein, a checkvalve located in said pipe at the desired distance from the pressor and a separate motor for driving the pump.

11. In combination, a truck forming a support for a percussive tool, an air-pressor for operating it by reciprocating columns of air, an air-pump for raising the pressure in the pressor and motors arranged to drive the pressor, pump and truck.

12. In combination, a truck forming a support for a percussive tool, an air-pressor for operating it by reciprocating columns of air, an air-pump for raising the air-pressure in the pressor and means arranged to drive the pressor, pump and truck comprising a motor for driving the pressor and a separate motor for driving the pump and truck.

13. In combination, a truck forming a support for apercussive tool, an air-pressor for operating it by reciprocating columns of air, an air-pump for raising the pressure of air in the pressor, a drive-shaft for the truck, a motor for rotating the drive-shaft to drive the truck in either direction and a connection between the drive-shaft and pump whereby the rotary movement of the shaft operates the pump.

14. In combination, a truck forming a support for a percussive tool, an air-pressor for operating it by reciprocating columns of air, an air-pump for raising the pressure of air in the pressor, a drive-shaft for the truck and a motor having a friction-clutch connection with the drive-shaft for driving the truck in either direction.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two witnesses.

ARTHUR H. GIBSON.

Witnesses:

FREDK. HAYNES, HENRY THIEME.

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